Addresses issue #981.

systems where another encoding is set in the locale

Also, implement for unix port.

This is more efficient, as allows to use register calling convention.
If needed, a structure pointer can be passed as argument to pass more
data.

ReadTheDocs needs the root directory in its search path so it finds
topindex.html.

Also update docs to explain how CAN baudrate is determined.

Addresses issue #968.

The sphinx_rtd_theme is used by ReadTheDocs to render a pretty looking
documentation.  If you have this theme installed locally then your
locally-compiled docs will look exactly like the published
documentation.   Otherwise it falls back to the default theme.

Hi,

i would like to add a little clarification to the parameter "data" of i2c.mem_read(): I misunderstood 

        ``data`` can be an integer or a buffer to read into

as "i can give a integer variable to read a integer into" .  This pull-request adds the following clarification:

         ``data`` can be an integer (number of bytes to read) or a buffer to read into

Thanks for your great work!

Best wishes,
Matthias

Currently compilation sporadically fails, because the automatic
dependency gets created *during* the compilation of objects.

OBJ is a auperset of PY_O and the dependencies apply to all objects.

Signed-off-by: Sven Wegener <sven.wegener@stealer.net>

Going from MICROPY_ERROR_REPORTING_NORMAL to
MICROPY_ERROR_REPORTING_TERSE now saves 2020 bytes ROM for ARM Thumb2,
and 2200 bytes ROM for 32-bit x86.

This is about a 2.5% code size reduction for bare-arm.

Else the directory might not exist.

Signed-off-by: Sven Wegener <sven.wegener@stealer.net>

Else we end up with several instances of the variable.

Signed-off-by: Sven Wegener <sven.wegener@stealer.net>

Required to build bare-arm with debugging.

Signed-off-by: Sven Wegener <sven.wegener@stealer.net>

When compiler optimization has been turned on, gcc knows that this code
block is not going to be executed. But with -O0 it complains about
path_items being used uninitialized.

Signed-off-by: Sven Wegener <sven.wegener@stealer.net>

The specifier should go after the number, before size suffix like 'k' or 'm'.
E.g.: "-X heapsize=100wk" will use 100K heap on 32-bit system and 200K - on
64-bit.

This turns failing assertions to type exceptions for things like
b"123".find(...).  We still don't support operations like this on bytes
objects (unlike CPython), but at least it no longer crashes.

Eg b"123" + bytearray(2) now works.  This patch actually decreases code
size while adding functionality: 32-bit unix down by 128 bytes, stmhal
down by 84 bytes.

For this, introduce MICROPY_MODULE_DICT_SIZE config setting.

This needs to be done before actually tagging the new version.

Uninitialised struct members get a default value of 0/false, so this is
not strictly needed.  But it actually decreases code size because when
all members are initialised the compiler doesn't need to insert a call
to memset to clear everything.  In other words, setting 1 extra member
to 0 uses less code than calling memset.

ROM savings in bytes: 32-bit unix: 100; bare-arm: 44; stmhal: 52.

Addresses issue #953.